You can mute the microphone of the active audio device during an active call, and then the other party cannot hear you.
To mute a call:
- Press the Mute button during an active call.
The LCD screen indicates that the call is on mute.
Also the mute key LED illuminates solid red when the call is on mute.
To un-mute a call:
- Press the Mute button again to un-mute the call.